The First Minister has written to David Cameron urging the UK Government to review the security of Scotland’s electricity supply.
Nicola Sturgeon said UK energy policy was compromising energy security north of the border and called on the Prime Minister to act.
Her letter follows concerns raised by industry experts at a meeting of the Scottish Energy Advisory Board.
Scottish generators, including Longannet power station, account for around 12% of the capacity connected to Britain’s high-voltage electricity network – but pay around 35% of the charges, according to the Scottish Government.
Last year it emerged that Longannet may be forced to close due to what the operator Scottish Power described as “disproportionately high” transmission charges to connect to the main grid network.
Ms Sturgeon said: “It was clear from the meeting of the Scottish Energy Advisory Board today that industry experts are concerned about security of supply in Scotland and across the UK, and for the continued maintenance of electricity supplies in a robust manor.
“These issues need to be assessed and that is why I am calling on Prime Minister David Cameron to act.
“It is vital that the UK Government fulfils its statutory responsibility to monitor security of supply issues and does so in an open and transparent way.
“The actions we have proposed would enable proper public scrutiny of the situation in Scotland.”
The letter calls on the UK Government to carry out an analysis of electricity capacity margins in Scotland.
It states: “The Scottish Government cannot accept a situation where levels of energy security in Scotland are compromised by energy policy and network operation decisions taken outside Scotland.
“It is for this reason we ask the UK Government to initiate a dedicated capacity assessment for Scotland, informed by stakeholder views, and take steps to transfer to the Scottish Parliament the authority to set our own national reliability standard for electricity.
“Together these measures would help to create the conditions necessary to incentivise investment in new thermal capacity in Scotland.”
Ms Sturgeon said Energy Minister Fergus Ewing would also be seeking urgent talks with National Grid chief executive Steve Holliday.
A spokeswoman for the Department of Energy and Climate Change said: “Thefuture of Longannet is a commercial matter for Scottish Power.
“The Department for Energy and Climate Change takes security of supply very seriously and has worked with National Grid to put in place an effective plan to secure electricity supply.
“National Grid have confirmed they will be able to meet demand and maintain system stability in Scotland – with or without Longannet.”